Isachne 柳葉箬屬
型態特徵
Annuals or perennials; culms hollow, ribbed, glabrous. Leaves often with tubercle-based hairs; ligule a fringe of hairs or obsolete; blades lanceolate or linear-lanceolate, acute, often prominently nerved. Inflorescence an open or contracted panicle, sometimes very small, branched on all sides, apex rigid. Spikelets globose, always muticous, 2-flowered; rachilla articulated above glumes; glumes tardily deciduous, often separate, herbaceous, nearly equal, as long as spikelet or slightly shorter; lemmas differing in texture or equal in texture, distinctly spaced; lower lemma as firm as upper lemma, and convex, or less firm and scarcely convex, reaching as far as upper lemma or distinctly farther; upper lemma shorter, strongly convex, firm; stamens in staminate or bisexual florets 3, anther linear; ovary glabrous; styles 2, free, stigma plumose, exserted apically, purple. Caryopsis plano-convex, free, enclosed between palea and lemma.
About 60 species in tropical and subtropical regions worldwide. Eight species, mainly at medium elevations in moist place, in Taiwan.
